The Alphabet Network gave a full season order to "Marvel's Agents of S.H.I.E.L.D." after just three weeks, the network said Thursday.

The Joss Whedon-produced hit, which exists in the same universe as recent big screen hits "The Avengers," "Iron Man" and "Captain America," debuted to impressive numbers, but fell off after the premiere. Still time-shifted viewing, which includes DVR and online viewing, shows the viewership staying strong.

The secret agent thriller has also given the network a big boost over last fall's "Dancing With the Stars" results show in the same slot.

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